Persistence (TA0003)(opens in a new tab or window)
sequence by host.id with maxspan=5s
[process where host.os.type == "linux" and event.type == "start" and event.action == "exec" and
process.parent.name == "apt" and process.args == "-c" and process.name in (
"bash", "dash", "sh", "tcsh", "csh", "zsh", "ksh", "fish"
)
] by process.entity_id
[network where host.os.type == "linux" and event.action == "connection_attempted" and event.type == "start" and not (
destination.ip == null or destination.ip == "0.0.0.0" or cidrmatch(
destination.ip, "10.0.0.0/8", "127.0.0.0/8", "169.254.0.0/16", "172.16.0.0/12", "192.0.0.0/24", "192.0.0.0/29",
"192.0.0.8/32", "192.0.0.9/32", "192.0.0.10/32", "192.0.0.170/32", "192.0.0.171/32", "192.0.2.0/24",
"192.31.196.0/24", "192.52.193.0/24", "192.168.0.0/16", "192.88.99.0/24", "224.0.0.0/4", "100.64.0.0/10",
"192.175.48.0/24","198.18.0.0/15", "198.51.100.0/24", "203.0.113.0/24", "240.0.0.0/4", "::1", "FE80::/10",
"FF00::/8", "172.31.0.0/16"
)
) and not process.executable == "/usr/bin/apt-listbugs"
] by process.parent.entity_id
Install detection rules in Elastic Security
Detect Suspicious APT Package Manager Network Connection in the Elastic Security detection engine by installing this rule into your Elastic Stack.
To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).